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Just tried the Doncastor and it has used 415v. With the 32 amp socket rating comes at 4mm with a 9.6v volt drop. This feels too small for my liking. Will get the calculator out and have a go.

I've used the tlc cable calculator, but cable can be 6mm with 415v entered or 10mm with 400v. You can see why I need to know what to use. It would be good to work it out by hand so I can refresh the old brain cell.

First time in industrial electrics so any help would be appreciated. What voltage figure is used for cable calcs, 400 or 415. I am installing a welder on a 32a 3 phase socket. MCB is type c 32 amp, length of run is 30 metres. Owner assures me it is purely for the welder but I know engineers...

Oldman2 By convention they have an in and out set of terminals and are marked line and load. I would have thought it mattered or they wouldnt be marked as such? The isolator is able to rotate through 180 degrees in the enclosure is the point Ban is trying to make.

To alias holmslaw or whatever your called sarcasism is the lowest form of wit . But it is funny though. :D :P :twisted: Any more help required just ask, its that us old people don't speak text on here.

Agree with above, had magnified picture and you can see 3 sets of n/o contacts with a set of 13 / 14 for hold on. Hope this is the 1 you want. A1 L & A2 N.

yes

Snowplough, it did look like a wind up. Series circuit with 2 resistors of equal value. The supply voltage will be dropped across each resistor equally.ie for a 230v supply 115v will be dropped across each resitor of equal value. if another resistor is added in series of same value then 77 v...

Hi Snowplough, THiz iz windy up. pleaz chock spollin furst

The 2.5 radial is the wrong size mcb, it should have a 20 amp mcb. 32 amp mcb is for 4mm radial.

Secure "If your gunna do it do it right", didn't George get caught with a bar of chocolate up his ar5e, or was it just a careless wispa

What colours cables have you got in the switch you are replacing with the dimmer and how many. Is any of them a 3 core cable. Please make a note of which wire goes to where before taking anything apart and ensure no power is connected. Can't see what the problem with the instructions is until...

As its the fuses on the fuse box then turn off the isolator switch beside the fuses and just pull them out. Consumer unit there is nothing to pull out just switch off the mcb's. If you are asked to pull the main fuse before the meter do not do it

I think you have been in the shower room at the wrong time if its starting to hurt. Bending over backwards to help is not ideal in a prison. Soap on a rope anyone.

Its a new phone with answer machine, no power no phone.

Thanks

Posted: Tue Jan 13, 2009 9:34 am Post Subject: -------------------------------------------------------------------------------- from what i gather you could have a consumer unit with 12 MCB's in all covered with one RCD and it still meets the 17th edition, the problem with that is...

The postion of switches above hobs is mentioned in Electricians Guide to the Building Regs, my copy at work. From memory it is 300mm from the edge of the cooker horizontally and at a minimum height of 150mm above worktop. They must not be directly postioned above a hob. Will stand by to be...

Just another thought, do they have a fish tank with a heater in it. My mates heater caused all sort of rcd tripping fault.

Had a similar problem in a scout hut I was asked to look at, it had 2 cons units. Con 1 rcd tripping. Ramp test of 22mA. Isolated all mcb's on cons 1 and ramp tested after each mcb reset giving me which circuit was leaking the most. Had small amount on each but with fluorescants operating the...